CN107759981A - A kind of preparation method of high-temperature-resistant antistatic type mould release membrance - Google Patents

A kind of preparation method of high-temperature-resistant antistatic type mould release membrance Download PDF

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CN107759981A
CN107759981A CN201711357925.1A CN201711357925A CN107759981A CN 107759981 A CN107759981 A CN 107759981A CN 201711357925 A CN201711357925 A CN 201711357925A CN 107759981 A CN107759981 A CN 107759981A
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powdered graphite
mould release
temperature
release membrance
resin
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李巧珍
杨明忠
张建初
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18Manufacture of films or sheets
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2363/00Characterised by the use of epoxy resins; Derivatives of epoxy resins
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2467/00Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/02Polyesters derived from dicarboxylic acids and dihydroxy compounds
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2479/00Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
    • C08J2479/04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
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    • C08J2479/00Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups C08J2461/00 - C08J2477/00
    • C08J2479/04Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
    • C08J2479/08Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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    • C08J2483/00Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04Polysiloxanes
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/08Metals
    • C08K2003/0806Silver
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    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
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Abstract

The present invention relates to membrane material preparing technical field, and in particular to a kind of preparation method of high-temperature-resistant antistatic type mould release membrance.The present invention is using modified epoxy as matrix,Self-control carries silver-colored powdered graphite and polyethylene terephthalate as accelerator,And it is aided with dimethicone and ammonium persulfate etc. and high-temperature-resistant antistatic type mould release membrance is prepared,Epoxy resin is modified first,Triazine ring structure is easily formed after bimaleimide resin and cyanate ester resin are heated,Enhance the resistance to elevated temperatures of epoxy resin,Due to containing silica in Ludox,Contact of the oxygen with epoxy resin in air can be effectively isolated,So as to improve the resistance to elevated temperatures of mould release membrance,Sensitized treatment is carried out to powdered graphite followed by stannous chloride,Silver ion reduction is induced to generate silver-colored simple substance,And it is adsorbed in powdered graphite surface,Improve the static electricity resistance of mould release membrance,Continuously add polyethylene terephthalate,Further improve the static electricity resistance of mould release membrance,It is with a wide range of applications.

Description

A kind of preparation method of high-temperature-resistant antistatic type mould release membrance
Technical field
The present invention relates to membrane material preparing technical field, and in particular to a kind of preparation side of high-temperature-resistant antistatic type mould release membrance Method.
Background technology
After mould release membrance refers to that there is the film of separation property, mould release membrance to be contacted under limited conditions with specific material on surface Without viscosity, or there is slight viscosity.Mould release membrance, also known as stripping film, barrier film, seperation film, adhesive block film, antiadhesion barrier etc..
Mould release membrance includes base material film and release layer.Base material film is more using paper, plastic sheeting, and release layer is mainly by silicon mixture Form.Under normal circumstances in order to increase the off-type force of plastic sheeting, plastic sheeting can be done to plasma treatment, or apply fluorine processing, Or silicon mould release is applied on the top layer of film material, such as PET, PE, OPP.It is allowed for a variety of organic pressure sensitive adhesives (Such as the pressure sensitive adhesive of hot melt adhesive, acrylic glue and rubber series)Extremely light and stable off-type force can be shown.According to needed for difference Mould release membrance off-type force, the viscosity of isolated product glue is different, the corresponding adjustment of off-type force, is allowed to reach when peeling off extremely gently and stably Off-type force.
At present, the mould release membrance of in the market is used for the display equipment such as semiconductor components and devices, liquid crystal panel, PDP and organic EL Diaphragm, or for adhesive sticker, adhesive tape, pain relieving ointment and plaster for curing rheumatism etc. the back of the body paste, for prevent the diaphragm of above-mentioned article or The above-mentioned article of person is voluntarily sticked together.Generally, mould release membrance, which is attached in respective material, plays protective effect early stage.
Gradually appear with the extensive use of China's mould release membrance, the shortcomings that many mould release membrances, coated silicone release agent Mould release membrance, there is good peeling force, heat resistance and stability, but substantial amounts of solvent is easily remained in the product after processing, Easily cause environmental pollution, harm health;The resistance of mould release membrance is larger, and by friction in process, its surface easily produces quiet Electricity, dust and other debris in air are adsorbed, it is attractive in appearance so as to influence product;Viscous volume, residual bonding occurs in use for a long time The low phenomenon of rate.
Therefore, developing a kind of mould release membrance that can solve the problem that above-mentioned performance issue is highly desirable.
The content of the invention
The technical problems to be solved by the invention:Heat-resisting quantity difference and static electricity resistance be present for current common mould release membrance Difference, the defects of can not meet market demands, there is provided a kind of preparation method of high-temperature-resistant antistatic type mould release membrance.
In order to solve the above technical problems, the present invention is using technical scheme as described below:
A kind of preparation method of high-temperature-resistant antistatic type mould release membrance, it is characterised in that specifically preparation process is:
(1)Deionized water, tetraethyl orthosilicate and absolute ethyl alcohol are mixed and is placed in beaker and stirs, obtains stirring liquid, then to beaker The middle hydrochloric acid that agitated liquid product 3% is added dropwise, continues insulation and mixes reaction, obtain reaction solution, reaction solution is put into ultrasonic wave shakes Sonic oscillation in instrument is swung, it is still aging, discharging, obtain from preparing silicon collosol;
(2)Bisphenol A type epoxy resin, bimaleimide resin and cyanate ester resin are mixed, heat temperature raising, mixed Resin, then by hybrid resin and from preparing silicon collosol, continue insulation and mix, obtain modified epoxy;
(3)80 mesh sieves are crossed after weighing the grinding of 24~32g graphite, collect sieving powdered graphite, by sieving powdered graphite, hydrochloric acid and chlorine Change stannous and mix reaction, obtain being sensitized powdered graphite, then sensitization powdered graphite, silver nitrate solution and ammoniacal liquor are mixed and are placed in Stir-activating in beaker, obtain activating powdered graphite, continue to add activation powdered graphite quality 3% into activation powdered graphite Glucose solution mixes, and filters off except filtrate, dries discharging, obtains self-control and carries silver-colored powdered graphite;
(4)Count in parts by weight, weigh 30~40 parts of modified epoxies respectively, 12~16 parts of self-controls carry silver-colored powdered graphite, 6~ 8 parts of polyethylene terephthalates and 4~6 parts of dimethicone mixing are placed in mixer and stirred, then add 2~4 parts of mistakes Ammonium sulfate and 1~3 part of absolute ethyl alcohol, continue insulated and stirred, obtain stirring slurry, stirring slurry is poured into double screw extruder Extrusion forming, cooling, traction winding, discharging, produce high-temperature-resistant antistatic type mould release membrance.
Step(1)The volume ratio of described deionized water, tetraethyl orthosilicate and absolute ethyl alcohol is 1:4:2, whipping temp is 35~45 DEG C, mixing time is 10~12min, and the mass fraction of hydrochloric acid is 20%, and the continuation stirring reaction time is 18~24min, The sonic oscillation time is 20~30min, and digestion time is 1~2 day.
Step(2)The mass ratio of described bisphenol A type epoxy resin, bimaleimide resin and cyanate ester resin is 3: 1:1, mixing time is 16~20min, and heat temperature raising temperature is 120~160 DEG C, hybrid resin and the mass ratio from preparing silicon collosol For 2:1, continuation mixing time is 45~60min.
Step(3)Described milling time is 10~12min, sieving powdered graphite, the hydrochloric acid and chlorine that mass fraction is 30% The mass ratio for changing stannous is 4:1:2, the stirring reaction time is 6~8min, sensitization powdered graphite, the nitric acid that mass fraction is 15% The mass ratio for the ammoniacal liquor that silver-colored solution and mass fraction are 20% is 1:2:2, the stir-activating time is 24~32min, and whipping temp is 30~40 DEG C, mixing time is 1~2h.
Step(4)Described whipping temp is 65~75 DEG C, and speed of agitator is 120~160r/min, mixing time 20 ~30min, continuation mixing time are 45~60min, and extrusion temperature is 120~160 DEG C, and squeeze pressure is 0.3~0.5MPa.
Compared with other method, advantageous effects are the present invention:
For the present invention using modified epoxy as matrix, self-control carries silver-colored powdered graphite and polyethylene terephthalate as promotion Agent, and be aided with dimethicone and ammonium persulfate etc. and high-temperature-resistant antistatic type mould release membrance is prepared, carry out acyl first with span Imide resin, cyanate ester resin and epoxy resin is modified from preparing silicon collosol, due to bimaleimide resin and cyanic acid Ester resin all has heat resistance, and both resins solidify in matrix surface under heated or catalyst action and easily form triazine Ring structure, make solidfied material that there is good heat resistance, enhance the resistance to elevated temperatures of epoxy resin, be advantageous to the resistance to height of mould release membrance Warm nature can be improved, and Ludox be prepared using teos hydrolysis method, due to containing silica in Ludox, in matrix Surface forms rigid structure, contact of the temperature in the external world with epoxy resin can be effectively isolated, so as to improve the resistance to height of mould release membrance Warm nature energy, by the materials such as tetraethyl orthosilicate form from preparing silicon collosol, there is good electric conductivity, can be mould release membrance surface Electrostatic is taken away, and reaches the effect for driving away electrostatic, so as to improve the static electricity resistance of mould release membrance, followed by stannous chloride to graphite powder End carries out sensitized treatment, makes powdered graphite Surface Creation tin hydroxide colloid, plays a part of crystal seed, induction silver ion reduction life Into silver-colored simple substance, and powdered graphite surface is adsorbed in, forms particulate, wherein the electrical conductivity of silver is much larger than graphite, make matrix surface Resistance is decreased obviously, and is improved the static electricity resistance of mould release membrance again, is continuously added the poly terephthalic acid second two with rub resistance Alcohol ester, in preparation process, matrix rub resistance is assigned, its surface is not produced electrostatic, further improve the anti-quiet of mould release membrance Electrically, it is with a wide range of applications.
Embodiment
It is 1 by volume:4:2 are placed in the mixing of deionized water, tetraethyl orthosilicate and absolute ethyl alcohol in beaker, are in temperature 10~12min is stirred at 35~45 DEG C, obtains stirring liquid, then the mass fraction of dropwise addition agitated liquid product 3% is 20% into beaker Hydrochloric acid, continue insulation mix reaction 18~24min, obtain reaction solution, by reaction solution be put into supersonic oscillations instrument surpass 20~30min of sound oscillation, still aging 1~2 day, discharging, is obtained from preparing silicon collosol;It is 3 in mass ratio:1:1 by bisphenol-A type ring Oxygen tree fat, bimaleimide resin and cyanate ester resin mix 16~20min, are heated to 120~160 DEG C, obtain It is 2 in mass ratio to hybrid resin, then by hybrid resin and from preparing silicon collosol:1, continue insulation and mix 45~60min, obtain To modified epoxy;Weigh after 24~32g graphite grinds 10~12min and cross 80 mesh sieves, sieving powdered graphite is collected, by quality Than for 4:1:The powdered graphite that sieves, the hydrochloric acid that mass fraction is 30% and stannous chloride are mixed 6~8min of reaction by 2, are obtained It is sensitized powdered graphite, then the ammoniacal liquor that powdered graphite will be sensitized, the silver nitrate solution that mass fraction is 15% and mass fraction are 20% It is 1 in mass ratio:2:2 mixing are placed in 24~32min of stir-activating in beaker, obtain activating powdered graphite, continue to living fossil The mass fraction that activation powdered graphite quality 3% is added in ink powder end is 10% glucose solution, in the case where temperature is 30~40 DEG C 1~2h is mixed, filters off except filtrate, dries discharging, self-control is obtained and carries silver-colored powdered graphite;Count, claim respectively in parts by weight 30~40 parts of modified epoxies, 12~16 parts of self-controls are taken to carry silver-colored powdered graphite, 6~8 parts of polyethylene terephthalates and 4 ~6 parts of dimethicone mixing are placed in mixer, under conditions of temperature is 65~75 DEG C, rotating speed is 120~160r/min 20~30min is stirred, then adds 2~4 parts of ammonium persulfates and 1~3 part of absolute ethyl alcohol, continues 45~60min of insulated and stirred, obtains Slurry is stirred, stirring slurry is poured into double screw extruder, in the case where temperature is 120~160 DEG C, pressure is 0.3~0.5MPa Extrusion forming, cooling, traction winding, discharging, produce high-temperature-resistant antistatic type mould release membrance.
Example 1
It is 1 by volume:4:2 are placed in the mixing of deionized water, tetraethyl orthosilicate and absolute ethyl alcohol in beaker, are 35 DEG C in temperature Lower stirring 10min, obtain stirring liquid, then the hydrochloric acid that the mass fraction of dropwise addition agitated liquid product 3% is 20% into beaker, continue to protect Temperature mixes reaction 18min, obtains reaction solution, and reaction solution is put into sonic oscillation 20min in supersonic oscillations instrument, stood old Change 1 day, discharging, obtain from preparing silicon collosol;It is 3 in mass ratio:1:1 by bisphenol A type epoxy resin, bimaleimide resin and Cyanate ester resin mixes 16min, is heated to 120 DEG C, obtains hybrid resin, then by hybrid resin and from preparing silicon collosol It is 2 in mass ratio:1, continue insulation and mix 45min, obtain modified epoxy;Weigh 24g graphite and grind mistake after 10min 80 mesh sieves, sieving powdered graphite is collected, is in mass ratio 4:1:2 by sieve powdered graphite, mass fraction be 30% hydrochloric acid and chlorine Change stannous and mix reaction 6min, obtain being sensitized powdered graphite, then the nitric acid that powdered graphite will be sensitized, mass fraction is 15% The ammoniacal liquor that silver-colored solution and mass fraction are 20% is 1 in mass ratio:2:2 mixing are placed in stir-activating 24min in beaker, are lived Graphite powder, the glucose that the mass fraction for continuing to add activation powdered graphite quality 3% into activation powdered graphite is 10% Solution, 1h is mixed at being 30 DEG C in temperature, filters off except filtrate, dries discharging, self-control is obtained and carries silver-colored powdered graphite;By weight Number meter is measured, weighs 30 parts of modified epoxies respectively, 12 parts of self-controls carry silver-colored powdered graphite, 6 parts of polyethylene terephthalates Ester and 4 parts of dimethicone mixing are placed in mixer, are stirred under conditions of temperature is 65 DEG C, rotating speed is 120r/min 20min, then 2 parts of ammonium persulfates and 1 part of absolute ethyl alcohol are added, continue insulated and stirred 45min, obtain stirring slurry, by stirring slurry Material is poured into double screw extruder, the extrusion forming in the case where temperature is 120 DEG C, pressure is 0.3MPa, cooling, traction winding, discharging, Produce high-temperature-resistant antistatic type mould release membrance.
Example 2
It is 1 by volume:4:2 are placed in the mixing of deionized water, tetraethyl orthosilicate and absolute ethyl alcohol in beaker, are 40 DEG C in temperature Lower stirring 11min, obtain stirring liquid, then the hydrochloric acid that the mass fraction of dropwise addition agitated liquid product 3% is 20% into beaker, continue to protect Temperature mixes reaction 22min, obtains reaction solution, and reaction solution is put into sonic oscillation 25min in supersonic oscillations instrument, stood old Change 1.5 days, discharging, obtain from preparing silicon collosol;It is 3 in mass ratio:1:1 by bisphenol A type epoxy resin, bimaleimide resin 18min is mixed with cyanate ester resin, is heated to 140 DEG C, obtains hybrid resin, then hybrid resin and self-control silicon is molten Glue is 2 in mass ratio:1, continue insulation and mix 55min, obtain modified epoxy;After weighing 28g graphite grinding 11min 80 mesh sieves are crossed, sieving powdered graphite is collected, is in mass ratio 4:1:2 by sieve powdered graphite, mass fraction be 30% hydrochloric acid and Stannous chloride mixes reaction 7min, obtains being sensitized powdered graphite, then the nitre that will be sensitized powdered graphite, mass fraction is 15% The ammoniacal liquor that the silver-colored solution of acid and mass fraction are 20% is 1 in mass ratio:2:2 mixing are placed in stir-activating 28min in beaker, obtain Powdered graphite is activated, the grape that the mass fraction for continuing to add activation powdered graphite quality 3% into activation powdered graphite is 10% Sugar juice, 1.5h is mixed at being 35 DEG C in temperature, filters off except filtrate, dries discharging, self-control is obtained and carries silver-colored powdered graphite; Count in parts by weight, weigh 35 parts of modified epoxies respectively, 14 parts of self-controls carry silver-colored powdered graphite, 7 parts of poly terephthalic acid second Diol ester and 5 parts of dimethicone mixing are placed in mixer, are stirred under conditions of temperature is 70 DEG C, rotating speed is 140r/min 25min, then 3 parts of ammonium persulfates and 2 parts of absolute ethyl alcohols are added, continue insulated and stirred 50min, obtain stirring slurry, by stirring slurry Material is poured into double screw extruder, the extrusion forming in the case where temperature is 140 DEG C, pressure is 0.4MPa, cooling, traction winding, discharging, Produce high-temperature-resistant antistatic type mould release membrance.
Example 3
It is 1 by volume:4:2 are placed in the mixing of deionized water, tetraethyl orthosilicate and absolute ethyl alcohol in beaker, are 45 DEG C in temperature Lower stirring 12min, obtain stirring liquid, then the hydrochloric acid that the mass fraction of dropwise addition agitated liquid product 3% is 20% into beaker, continue to protect Temperature mixes reaction 24min, obtains reaction solution, and reaction solution is put into sonic oscillation 30min in supersonic oscillations instrument, stood old Change 2 days, discharging, obtain from preparing silicon collosol;It is 3 in mass ratio:1:1 by bisphenol A type epoxy resin, bimaleimide resin and Cyanate ester resin mixes 20min, is heated to 160 DEG C, obtains hybrid resin, then by hybrid resin and from preparing silicon collosol It is 2 in mass ratio:1, continue insulation and mix 60min, obtain modified epoxy;Weigh 32g graphite and grind mistake after 12min 80 mesh sieves, sieving powdered graphite is collected, is in mass ratio 4:1:2 by sieve powdered graphite, mass fraction be 30% hydrochloric acid and chlorine Change stannous and mix reaction 8min, obtain being sensitized powdered graphite, then the nitric acid that powdered graphite will be sensitized, mass fraction is 15% The ammoniacal liquor that silver-colored solution and mass fraction are 20% is 1 in mass ratio:2:2 mixing are placed in stir-activating 32min in beaker, are lived Graphite powder, the glucose that the mass fraction for continuing to add activation powdered graphite quality 3% into activation powdered graphite is 10% Solution, 2h is mixed at being 40 DEG C in temperature, filters off except filtrate, dries discharging, self-control is obtained and carries silver-colored powdered graphite;By weight Number meter is measured, weighs 40 parts of modified epoxies respectively, 16 parts of self-controls carry silver-colored powdered graphite, 8 parts of polyethylene terephthalates Ester and 6 parts of dimethicone mixing are placed in mixer, are stirred under conditions of temperature is 75 DEG C, rotating speed is 160r/min 30min, then 4 parts of ammonium persulfates and 3 parts of absolute ethyl alcohols are added, continue insulated and stirred 60min, obtain stirring slurry, by stirring slurry Material is poured into double screw extruder, the extrusion forming in the case where temperature is 160 DEG C, pressure is 0.5MPa, cooling, traction winding, discharging, Produce high-temperature-resistant antistatic type mould release membrance.
Comparative example
With the mould release membrance of company of Quanzhou City production as a comparison case
Mould release membrance in high-temperature-resistant antistatic type mould release membrance produced by the present invention and comparative example is detected, testing result such as table Shown in 1:
1st, static electricity resistance is tested
Tested using sheet resistance tester, under the conditions of temperature is 22 DEG C, humidity is 55%, to the reality of the invention prepared The inner side and outer side of example 1~3 and comparative example product is tested.
2nd, off-type force is tested
The example 1~3 and comparative example product prepared using the present invention is test piece, by the standard that size is 50mm × 175mm × 35mm Band is attached in test piece, using testing roller(2kg load)Come and gone 2 times with 10mm/sec speed and index zone is pressed in test piece Afterwards, test piece is clamped with 2 pieces of smooth metallic plates, both sides respectively add 70g/cm2Pressure, kept at a temperature of about 23 DEG C After 20h, pressure is laid down, index zone is peeled off from the direction of 180 degree according to 300mm/min speed, test.It is anti-to each test piece Repetition measurement tries 5 times, records average value.
Table 1
From the data in table 1, it can be seen that high-temperature-resistant antistatic type mould release membrance produced by the present invention, have that heat-resisting quantity is good, antistatic effect The advantages that strong, hence it is evident that better than comparative example product.Therefore, there is wide prospect of the application.

Claims (5)

1. a kind of preparation method of high-temperature-resistant antistatic type mould release membrance, it is characterised in that specifically preparation process is:
(1)Deionized water, tetraethyl orthosilicate and absolute ethyl alcohol are mixed and is placed in beaker and stirs, obtains stirring liquid, then to beaker The middle hydrochloric acid that agitated liquid product 3% is added dropwise, continues insulation and mixes reaction, obtain reaction solution, reaction solution is put into ultrasonic wave shakes Sonic oscillation in instrument is swung, it is still aging, discharging, obtain from preparing silicon collosol;
(2)Bisphenol A type epoxy resin, bimaleimide resin and cyanate ester resin are mixed, heat temperature raising, mixed Resin, then by hybrid resin and from preparing silicon collosol, continue insulation and mix, obtain modified epoxy;
(3)80 mesh sieves are crossed after weighing the grinding of 24~32g graphite, collect sieving powdered graphite, by sieving powdered graphite, hydrochloric acid and chlorine Change stannous and mix reaction, obtain being sensitized powdered graphite, then sensitization powdered graphite, silver nitrate solution and ammoniacal liquor are mixed and are placed in Stir-activating in beaker, obtain activating powdered graphite, continue to add activation powdered graphite quality 3% into activation powdered graphite Glucose solution mixes, and filters off except filtrate, dries discharging, obtains self-control and carries silver-colored powdered graphite;
(4)Count in parts by weight, weigh 30~40 parts of modified epoxies respectively, 12~16 parts of self-controls carry silver-colored powdered graphite, 6~ 8 parts of polyethylene terephthalates and 4~6 parts of dimethicone mixing are placed in mixer and stirred, then add 2~4 parts of mistakes Ammonium sulfate and 1~3 part of absolute ethyl alcohol, continue insulated and stirred, obtain stirring slurry, stirring slurry is poured into double screw extruder Extrusion forming, cooling, traction winding, discharging, produce high-temperature-resistant antistatic type mould release membrance.
A kind of 2. preparation method of high-temperature-resistant antistatic type mould release membrance according to claim 1, it is characterised in that:Step (1)The volume ratio of described deionized water, tetraethyl orthosilicate and absolute ethyl alcohol is 1:4:2, whipping temp is 35~45 DEG C, stirring Time is 10~12min, and the mass fraction of hydrochloric acid is 20%, and the continuation stirring reaction time is 18~24min, the sonic oscillation time For 20~30min, digestion time is 1~2 day.
A kind of 3. preparation method of high-temperature-resistant antistatic type mould release membrance according to claim 1, it is characterised in that:Step (2)The mass ratio of described bisphenol A type epoxy resin, bimaleimide resin and cyanate ester resin is 3:1:1, mixing time For 16~20min, heat temperature raising temperature is 120~160 DEG C, and hybrid resin and the mass ratio from preparing silicon collosol are 2:1, continue to stir It is 45~60min to mix the time.
A kind of 4. preparation method of high-temperature-resistant antistatic type mould release membrance according to claim 1, it is characterised in that:Step (3)Described milling time is 10~12min, the quality of sieving powdered graphite, the hydrochloric acid that mass fraction is 30% and stannous chloride Than for 4:1:2, the stirring reaction time is 6~8min, sensitization powdered graphite, the silver nitrate solution that mass fraction is 15% and quality The mass ratio for the ammoniacal liquor that fraction is 20% is 1:2:2, the stir-activating time is 24~32min, and whipping temp is 30~40 DEG C, is stirred It is 1~2h to mix the time.
A kind of 5. preparation method of high-temperature-resistant antistatic type mould release membrance according to claim 1, it is characterised in that:Step (4)Described whipping temp is 65~75 DEG C, and speed of agitator is 120~160r/min, and mixing time is 20~30min, is continued Mixing time is 45~60min, and extrusion temperature is 120~160 DEG C, and squeeze pressure is 0.3~0.5MPa.
CN201711357925.1A 2017-12-17 2017-12-17 A kind of preparation method of high-temperature-resistant antistatic type mould release membrance Pending CN107759981A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108659494A (en) * 2018-05-15 2018-10-16 王召惠 A kind of preparation method of nano modification polymer matrix screened film
CN108795316A (en) * 2018-05-18 2018-11-13 翟琳 A kind of preparation method of flame-retardant and anti-static type release film
CN109504327A (en) * 2018-11-13 2019-03-22 烟台德邦科技有限公司 Epoxy resin packaging conductive adhesive with high Tg and high reliability and preparation method thereof
CN110239185A (en) * 2019-06-14 2019-09-17 江苏双星彩塑新材料股份有限公司 A kind of MLCC release film basement membrane and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108659494A (en) * 2018-05-15 2018-10-16 王召惠 A kind of preparation method of nano modification polymer matrix screened film
CN108795316A (en) * 2018-05-18 2018-11-13 翟琳 A kind of preparation method of flame-retardant and anti-static type release film
CN109504327A (en) * 2018-11-13 2019-03-22 烟台德邦科技有限公司 Epoxy resin packaging conductive adhesive with high Tg and high reliability and preparation method thereof
CN110239185A (en) * 2019-06-14 2019-09-17 江苏双星彩塑新材料股份有限公司 A kind of MLCC release film basement membrane and preparation method thereof

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Application publication date: 20180306